That is
your personal preference, Jon, but many Marvin users expressly wish to
avoid that. They have made it loud and clear in this thread and elsewhere, and I agree with them: theirs is a legitimate preference, and Marvin could be smart and user-friendly enough to oblige them.
Both your preference, and theirs, is a legitimate user request/expectation. Remember that even if their preference were activated in Marvin settings, there would be a button even for these users to return to Marvin's default formatting. You know, I myself might prefer one way, or the other, depending on the particular book. Marvin will be top quality software if it gives every user the
free choice of preference in this regard.
One size never fits all. Here, too, Marvin would be a pioneer among e-readers in giving its users a complete and
transparent freedom of choice, because most (all?) e-readers don't do that.
Currently, debating this issue is rather fruitless, because Marvin currently does not support
any true settings themes. (See
GitHub #19.) We can currently only store font and background colour combinations, and only 3 of them.
By the way, this is a variation of the ancient dilemma about "inherit paragraph spacing from previous book: yes or no?", but in a comprehensive, larger sense, applied to
all formatting settings.